Capacity: 1430 mAh Tension: 3.8 V weight: 26 g Dimensions: 82x32x5 mm 100% brand new, high quality BATTERY QX CELLS MANUFACTURE Recharge Cycle> 550 Integrated Dual IC chip protection Anti-overloading, for a longer life Anti-short circuit, to protect your data No memory effect Battery rated by manufacturer RoHS, C€, FCC, ISO9001 Dispatched within 24hrs guaranteed in a protective bubble wrap These batteries have exactly the same size as the original batteries The QX CELLS batteries are considered to be the best quality on the market for iphone batreries. the battery is is compatible with iphone 4S / 4GS , and is shipped with a tool kit.